Deep well pumping unit



w.' F. BROWN DEEP WELL PUMPING UNIT Filed June 14, 1946 2 She'ets-Sheetl Inventar w/L 1M F; www

Attn meys May u, 1948. w. F. BROWN 2,441,256

DEEP `WELJJ PUMPING UNIT Filed June 14, 1946 2 Sheets-Sheet 2 4o a 42 20ggg# 42 20 2 ZI gz I l1 reuma' waz/An fr. and wu Am meys Patented Mayl1, 1948 l UNITED STATES PATENT carica s Applicatie: 112128341?. man uThis invention relates to an improved construction of pumping unit usedwith deep well oil pumps and has for its primary object to provide aunit similar to that disclosed in my co-pending application for U. S.Letters Patent, entitled Walking beam, filed April 12, 1946, and bearingSerial No. 661,839.

The present invention is for the same purpose as the invention of theaforementioned application and differs therefrom in that provision of apivotally mounted walking beam is dispensed with.

The primalry object of the present invention is to provide a deep wellpumping unit that may be operated with a minimum of power and which willbe especially efficient for use with wells of great depth.

A further object of the invention is to provide a supporting beamforming a part of the pump unit and which is normally maintained in aVfixed position from which it is capable of being readily released andswung to a position in which it-will not interfere with the removal ofpump rods or pump tubing from an oil well.

' A further aim of the invention is to provide a normally fixedsupporting beam possessing sumcient resiliency to cushion the parts atthe instant that the direction of movement of the pump rod is reversed.

Other objects and advantages of the invention will hereinafter becomemore fullyapparent from the following description of the drawings, whichillustrate a preferred embodiment thereof. and wherein:

Figure 1 is a side elevational view of the improved deep well pumpingunit;

Figure 2 is a horizontal sectional view thereof taken substantiallyalong a plane as indicated by the line 2-2 of Figure 1; y

Figure 3 is a. transverse vertical sectional view taken substantiallyalong a plane as indicated by the line 3-3 of Figure l;

Figure 4 is anv end view in elevation of the unit with the cablesremoved therefrom;

Figure 5 is a'transverse vertical sectional view taken substantiallyalong a plane as indicated by the line 5 5 of Figure l;

Figure 6 is a horizonal sectional view taken substantially along a planeas indicated by the line 6-6 of Figure 1;

Figure 7 is a fragmentary side-elevational view. partly in verticalsection of a portion of the unit;

Figure 8 is a similar view of another portion thereof, and

Figure 9 is a cross sectional view taken substantially along a planeasindicated by the line 9-9 of Figure 8.

Referring more specifically to the drawings, a' deep well pumping unitin its entirety is designated generally Il and includes an uprightsupporting frame, designated generally li and which includes upwardlyand inwardly inclined corner posts I2, a top or platform i3 which issupported thereby. an upright jack post i5 and horizontal braces Il.

A pair of fulcrum brackets i6 are bolted to the upper side of theplatform i! and are adapted to engage in recesses of bifurcated fulcrummembers i1 which depend from a supporting beam i8, as seen in Figure 5.The members i5 and i1 are provided with aligned openings for receiving apivot pin Il which extends therethrough and by means of which the beamil is pivotally supported on and above the frame ii.

The beam il is formed of laterally spaced channel members 2l which areauranged with the channel portion thereof 'ripening outwardly of oneanother and in laterally spaced apart relationship. l

A pin or shaft 2l extends through intermediate portions of the channelmember 20, adjacent one end of the beam I2 to provide a journal for apair of` pulleys 22 which are journalled thereon and disposed betweenthe channel members 20. As best seen in Figures 5 and 6, a shaft or axle2l extends through the intermediate portion of the opposite ends of thechannel members 20 and through bearing blocks 2|. mounted in the channelportions thereof at the opposite end of the beam Il. A pair of pulleys25 are journalled on the shaft 23 and disposed between said lastmentioned ends of the channel members 20. The channel members 2li areprovided with downwardly opening sockets 20 at each end thereof providedto receive ball joints 21 formed on corresponding ends of rigid braces2l. The opposite ends of the braces 2l are pivotally connected bytapered pins 29 to bifurcated brackets 30, one of which is fastened toeach of the corner posts l2. adjacent the lower ends thereof. It willthus be seen that the four braces 2l normally function to support thebeam il in a rigid horizontal position above and at a rightangle to thevertical axis of the plane ii.

The pulleys 22 lare located substantially over the'upper end ofthe welltubing 3l of an oil well from the upper end of which well tubing Ilprojects a pump rod I2. A cable or other flexible member 8l is trainedover each of the aligned pulleys 2l anden; said cables havingcorresponding ends which are connected by fastenlngs Il to the .upperend ot the pump rod 32. The opposite ends of the cables 33 are connectedto the socket portion of an eye member 38, the eye oi' which turnablyengages a pin or sub-shaft 38 which projects outwardly from one side ofa. substantially semi-circular counter-weight 31 which is keyed to anend of a crank or driven shaft 38.- .Thefcrank or driven-shaft 38Atermi; nates at the side of a countcrweight 31 ,from which the sub-shaft36 projects so as not to interfere with the cables 33 when thecounterweight 31 is revolved. The sub-shaft 38 is disposed concentricwith the outer edge o! the counter-weight 31.

From the foregoing it will be readily apparent that by providing acounter-weight 31 which substantially equals the weight of the pump rod32, the pump rod 32 can be reciprocated by the deep well pumping unit iwith very little power required. The shaft 38 is driven in any suitablemanner and from any suitable source of power and it will be readilyapparent that in moving in either direction from its upper dead centerposi'- tion, as seen in Figure 1, it will exert a pull on cables 33 toraise the pump rod 32 until the counterweight 31 is moved through an arcof substantially 130.V During this movement, gravity pull exerted bythecounter-weight 31 will counterbalance the weight of the pump rod 32until the counter-weight has reached its lower dead center position.After being moved therebeycnd by the einen shaft sa the downward punexerted by the' pimp rod 32 will overcome the weight of thecounter-weight 31 so that the shaft 38 .will be revolved with asubstantially uniform load thereon and with a very small amount of powerre-' quired.

The supporting beam I8 and the braces 28 possess sufficient resiliencyto cushion the pump rod 32 at the instan.; that the direction of itsmovement isl reversed. The outer'portion of the peripheries of thepulleys 22 are at all times located directly above the well tubing 3i sothat the pull on the pump rod 32 is' in a direction axially of the welltubing 3i.

To facilitate tensioning of cables'33' and to eliminate any slackexisting therein', two pairs oigrooved pulleys 39 are 'journaled betweenand'.

above the pulleys 22 and' 25 by brackets or bars 40; The brackets 4G areprovided with vertical slots 4I for adjustably" receiving nut :and boltclamping fastenngs i2 which project laterally from the beam members20and by which the brackets $0 and pulleys are adjustably sup-` portedrelatively to the `beamvl8. The cables 33 are trained over theptlllelysillwhich may be adjusted toward and away from-the beam 1i8 forvarying thetension of Lthe cables 33. I To remove'the pump rod 32'andthe well tubing 3|, the upper endof the pumpK rod32 is engaged andthe'cables 3 3 are detached: therefrmafter which the tapered pins` 29j'fare removed "lto disconnect 'th'e `braces 128 from the fram@ M 'Thebeam i 8 .can'then be' swung to ziivthe pulleys intermediate of its endson the supporting frame, braces supported by said trame and connected tothe ends of the beam for maintaining said beam in a horizontal position,pulleys Journalled in the ends of said beam, a cable trained over saidpulleys and having one end adapted to be connected to a pump roddisposed directly beneath the outer portion of one of said pulleys, andthe opposite end of said cable being eccentrically connected to a drivenrotatable counter-weight.

2. A deep well pumping unit as in claim 1, said braces being deachablyconnected to the frame and pivotally connected by ball and socketconnections to the ends of the beam.

3. In a deep we ll pumping unit as in claim l. said beam being formed oflaterally spaced channel irons, and said pulleys being journalledbetween the ends of said channel irons.

4. A deep well pumping unit comprising an upright supporting frame, abeam iulcrumed thereon and supported thereabove and at right anglesthereto, pulleys journalled in each of the ends of said beam, cablestrained over said pulleys and having corresponding 'ends connected-to adeep well pump rod, disposed beneath one end of the beam, a driveneccentric counter-weight disposed beneath the other end of the said beamand pivotally and eccentrically connected to the opposite ends of saidcables, and detachable means for maintaining said beam in substantiallya horizontal position.

5. A deep ,well pumping unit as in claim 4, said detachable meanscomprising a plurality of diagonal braces having lower ends detachablyconnected to corner posts oi the frame, said braces having ball portionson their opposite ends. and socket members secured to the ends oi saidbeams for receiving and forming a universal connection with said ballportions, whereby when said irst mentioned ends of the braces are.detached from the frame said beam may be swung to a position out of theupward path of movement of the pump rod or the pump tubing containingsaid rod.

WILLIAM F. BROWN.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 1 1,908,653 Andrews May 9, 19332,178,122. Ostler Oct. 31, 1939

